package edu.sctu.practice.class02.Wangpeng.Assign03;

/**
 * Created by wp on 2015/11/4.
 */
public class Circle extends GeometricObject {
    protected double radius;

    public Circle(){
        this(1.0,"white",1.0);
    }
        public Circle(double radius){
            super("white",1.0);
            this.radius=radius;
        }
    public Circle(double radius,String color,double weight){
        super(color,weight);
        this.radius=radius;
    }
    public double getRadius(){
        return radius;
    }
    public void setRadius(double radius){
        this.radius=radius;
    }
    public double findArea(){
        return radius*radius*Math.PI;
    }
    public double findPerimeter(){
        return 2*radius*Math.PI;
    }
    public boolean equals(Circle circle){
        return this.radius==circle.getRadius();
    }
    public String toString(){
        return "圆的半径="+radius;
    }

}
